Cellular paper-board.



I. I. HINDE.

CELLULAR PAPER BOARD. APPLICATION FILED APR-8.1915 RENEWED JAN. 2. I917.

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JAMES J. HINIDE, OF SANDUSKY, OHIO.

CELLULAR PAPER-BOARD.

Application filed April 8, 1915, Serial No. 20,005.

To all whom it may concern Be it known that I, JAMES J. HINDE, a citizen 'of the United States of America, residing at Sandusky, in the county of Erie and State of Ohio, have invented certain new and useful Improvements in Cellular Paper-Boards, of which the following is a specification, reference being had therein to the accompanying drawings.

It is the object of the invention to obtain a construction of cellular paper or fiber board which possesses a greater degree of resiliency than constructions heretofore made. To this end the invention consists in the construction as hereinafter set forth.

In the drawings:

Figure 1 is an enlarged cross section through the board;

Fig. 2 is a similar View showing amodified construction; and

Fig. 3 is a diagram illustrating the principle of construction.

The usual method of forming cellular paper or fiber board is to corrugate a paper strip by passing the same between fluted rolls and then to affix to the sheet a facing strip on one or both sides. The result is a board possessing a comparatively high de gree of rigidity and a certain amount of resiliency which adapts it for use for shipping boxes and similar purposes. This board does'not, however, permit of the resiliently yielding of its surfaces to any great extent for the reason that the corrugated strip forms substantially straight cross braces between the facing strips. Thus to press the face of the board inward it is necessary to overcome the resistance of these cross braces, and generally when this is done the structure is completely broken down and will not assume its original position.

My improved construction possesses a much higher degree of yieldability and resiliency which is obtained by substituting a round brace for the substantially straight braces of the ordinary form. Preferably this is accomplished by forming the brace members of substantially circular cross section and by spacin the same to permit of deflection into an e1 iptical form.

As shown in detail, A is a paper or fiber Specification of Letters Patent.

Patented Aug. 28, 191W.

Renewed January 2, 1917. Serial No. 140,302.

strip which is bent to form a series of substantially circular sections B united by a flat intermediate portion C. D is a facing strip glued or otherwise secured to the flat portion C, and E is 21. facing strip for the opposite side of the board. When completethe structure is that of two parallel facing strips with circular section spacers therebetween.

F or some purposes it may be desirable to form the board with a single facing strip as shown in Fig. 2, but generally it is formed with double facings as shown in Fig. 1.

In use, whenever sufficient pressure is brought to bear upon the face of the board the circular sections B will be flattened into an elliptical form, but if the deflection is not too great upon release of the pressure the board will resume its original form. The difference in the construction from the ordinary board is illustrated in Fig. 3, in which the dotted line F indicates the usual construction of corrugated strip for forming the cellular board. Such a strip will not respond to an ordinary pressure upon the surface of the board and if suflicient pressure is brought to bear, it will result in completely crushing down the structure instead of a temporary deflection. With my improved construction, on the contrary, the structure would not be permanently crushed but would possess a high degree of resiliency. This is due to the return-bent form of the corrugations, by which the entire length of the curve is utilized as a spring, instead of the comparatively curved sections in the ordinary form of corrugations.

My improved material is applicable for many uses, but it is particularly adapted for shipping packages for fragile articles,

and on account of the high degree of resiliency, breakage is limited to the minimum.

What I claim as my invention is 1. A cellular paper board, comprising a facing sheet and a sheet fashioned to form a series of cylinders with flat return-bends intermediate the same, said flat portions be ing attached to the facing sheet, and a second facing strip overlying and attached to said cylinders.

2. A cellular paper board, comprising a I tached to said facing sheet, and a second facing sheet overlying said cylinders and attached thereto.

In testimon whereof I affix my signature 1n presence 0 two Witnesses.

JAMES J. HINDE.

Witnesses:

E. W. STOCKWELL, C. H. FORCE. 

